To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems.A box of mass 3.0 kgkg slides down a rough vertical wall. The gravitational force on the box is 29.4 NN . When the box reaches a speed of 2.5 m/sm/s , you start pushing on one edge of the box at a 45∘∘ angle (use degrees in your calculations throughout this problem) with a constant force of magnitude FpFp = 23.0 NN , as shown in (Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 NN . How fast is the box sliding 2.8 ss after you started pushing on it? Find the box's speed vfvf at 2.8 ss after you first started pushing on it. I Review I ConstantsLearning Goal:SubmitPrevious AnswersTo practice Problem-Solving Strategy 6.1 for Newtonianmechanics problems.CorrectA box of mass 3.0 kg slides down a rough vertical wall. Thegravitational force on the box is 29.4 N. When the box reaches aspeed of 2.5 m/s, you start pushing on one edge of the box at a45° angle (use degrees in your calculations throughout thisproblem) with a constant force of magnitude F, = 23.0 N , asall the vectors in your free-body diagram were drawn with their correct relative lengths, their vector sum Fnet =E; F; would provide somequantitative information about the box's acceleration. Since this is not the case here, you cannot obtain any further information about the box'sacceleration without first performing some calculations based on Newton's second law.Note that in the diagram above, a coordinate system wasestablished so that the positive x axis pointsrest of this problem. Keep in mind that you are trying to find the box's speed 2.8 s after starting to push on it.the right and the positive y axis points upward. This is the same coordinate system used throughout theshown in (Figure 1). There is now a frictional force between thebox and the wall of magnitude 13.0 N. How fast is the box sliding2.8 s after you started pushing on it?SolvePart CFind the box's speed vf at 2.8 s after you first started pushing on it.• View Available Hint(s)ΑΣΦ?FigureVf = 3.2m/s1 of 1SubmitPrevious AnswersX Incorrect; Try Again; 2 attempts remainingAssess45°Part D Complete previous part(s)Provide FeedbackNext lew I ConLearning Goal:To practice Problem-Solving Strategy 6.1 for Newtonianmechanics problems.Still using our simplified model (in which we do not know the magnitudes of the forces), draw a free-body diagram showing all the forces acting on the box afteryou start pushing on it. The positive y axis is taken to be upward. The black dot represents the box. Since our model is about having constant forces of unknownmagnitude, you do not need to draw the vectors to scale, but your final diagram should be physically reasonable.A box of mass 3.0 kg slides down a rough vertical wall. Thegravitational force on the box is 29.4 N. When the box reaches aspeed of 2.5 m/s, you start pushing on one edge of the box at a45° angle (use degrees in your calculations throughout thisproblem) with a constant force of magnitude F, = 23.0 N , asDraw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The relative lengths of the vectors will not begraded.?shown in (Figure 1). There is now a frictional force between thebox and the wall of magnitude 13.0 N. How fast is the box sliding2.8 s after you started pushing on it?No elements selectedyF,Figure1 of 1Select the elements from the list and add them to the canvas setting the appropriate attributes.45°SubmitPrevious Answers

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To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems.A box of mass 3.0 kgkg slides down a rough vertical wall. The gravitational force on the box is 29.4 NN .  When the box reaches a speed of 2.5 m/sm/s , you start pushing on one edge of the box at a 45∘∘ angle (use degrees in your calculations throughout this problem) with a constant force of magnitude FpFp = 23.0 NN , as shown in (Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 NN . How fast is the box sliding 2.8 ss after you started pushing on it? Find the box's speed vfvf at 2.8 ss after you first started pushing on it. I Review I ConstantsLearning Goal:SubmitPrevious AnswersTo practice Problem-Solving Strategy 6.1 for Newtonianmechanics problems.CorrectA box of mass 3.0 kg slides down a rough vertical wall. Thegravitational force on the box is 29.4 N. When the box reaches aspeed of 2.5 m/s, you start pushing on one edge of the box at a45° angle (use degrees in your calculations throughout thisproblem) with a constant force of magnitude F, = 23.0 N , asall the vectors in your free-body diagram were drawn with their correct relative lengths, their vector sum Fnet =E; F; would provide somequantitative information about the box's acceleration. Since this is not the case here, you cannot obtain any further information about the box'sacceleration without first performing some calculations based on Newton's second law.Note that in the diagram above, a coordinate system wasestablished so that the positive x axis pointsrest of this problem. Keep in mind that you are trying to find the box's speed 2.8 s after starting to push on it.the right and the positive y axis points upward. This is the same coordinate system used throughout theshown in (Figure 1). There is now a frictional force between thebox and the wall of magnitude 13.0 N. How fast is the box sliding2.8 s after you started pushing on it?SolvePart CFind the box's speed vf at 2.8 s after you first started pushing on it.• View Available Hint(s)ΑΣΦ?FigureVf = 3.2m/s1 of 1SubmitPrevious AnswersX Incorrect; Try Again; 2 attempts remainingAssess45°Part D Complete previous part(s)Provide FeedbackNext > lew I ConLearning Goal:To practice Problem-Solving Strategy 6.1 for Newtonianmechanics problems.Still using our simplified model (in which we do not know the magnitudes of the forces), draw a free-body diagram showing all the forces acting on the box afteryou start pushing on it. The positive y axis is taken to be upward. The black dot represents the box. Since our model is about having constant forces of unknownmagnitude, you do not need to draw the vectors to scale, but your final diagram should be physically reasonable.A box of mass 3.0 kg slides down a rough vertical wall. Thegravitational force on the box is 29.4 N. When the box reaches aspeed of 2.5 m/s, you start pushing on one edge of the box at a45° angle (use degrees in your calculations throughout thisproblem) with a constant force of magnitude F, = 23.0 N , asDraw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The relative lengths of the vectors will not begraded.?shown in (Figure 1). There is now a frictional force between thebox and the wall of magnitude 13.0 N. How fast is the box sliding2.8 s after you started pushing on it?No elements selectedyF,Figure1 of 1Select the elements from the list and add them to the canvas setting the appropriate attributes.45°SubmitPrevious Answers

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